Duncan Wood / UniGraphic

Basically i glued Peter Drescher and Simon Ford libs in a GraphicsDisplay class, then derived TFT or LCD class (which inherits Protocols class), then the most derived ones (Inits), which are per-display and are the only part needed to be adapted to diff hw.

Dependents:   Brew

Display/LCD.cpp@7:bb0383b91104, 2015-02-17 (annotated)

Committer:
Geremia
Date:
Tue Feb 17 11:02:06 2015 +0000
Revision:
7:bb0383b91104
Parent:
4:12ba0ecc2c1f
Child:
18:ffa58f1a680a
TFT: added get deviceID, scroll functions

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 4:12ba0ecc2c1f 1 /* mbed UniGraphic library - universal LCD driver class
Geremia 4:12ba0ecc2c1f 2 * Copyright (c) 2015 Giuliano Dianda
Geremia 4:12ba0ecc2c1f 3 * Released under the MIT License: http://mbed.org/license/mit
Geremia 4:12ba0ecc2c1f 4 *
Geremia 4:12ba0ecc2c1f 5 * Derived work of:
Geremia 4:12ba0ecc2c1f 6 *
Geremia 4:12ba0ecc2c1f 7 * mbed library for the mbed Lab Board 128*32 pixel LCD
Geremia 3:48f3282c2be8 8 * use C12832 controller
Geremia 3:48f3282c2be8 9 * Copyright (c) 2012 Peter Drescher - DC2PD
Geremia 3:48f3282c2be8 10 * Released under the MIT License: http://mbed.org/license/mit
Geremia 3:48f3282c2be8 11 *
Geremia 3:48f3282c2be8 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Geremia 3:48f3282c2be8 13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Geremia 3:48f3282c2be8 14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Geremia 3:48f3282c2be8 15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Geremia 3:48f3282c2be8 16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Geremia 3:48f3282c2be8 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Geremia 3:48f3282c2be8 18 * THE SOFTWARE.
Geremia 3:48f3282c2be8 19 */
Geremia 3:48f3282c2be8 20
Geremia 0:75ec1b3cde17 21 #include "LCD.h"
Geremia 0:75ec1b3cde17 22
Geremia 0:75ec1b3cde17 23 //#include "mbed_debug.h"
Geremia 7:bb0383b91104 24
Geremia 0:75ec1b3cde17 25 #define SWAP(a, b) { a ^= b; b ^= a; a ^= b; }
Geremia 2:713844a55c4e 26
Geremia 0:75ec1b3cde17 27
Geremia 0:75ec1b3cde17 28 LCD::LCD(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char *name)
Geremia 7:bb0383b91104 29 : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y), _LCDPAGES(lcdsize_y>>3), _IC_X_SEGS(ic_x_segs), _IC_Y_COMS(ic_y_coms), _IC_PAGES(ic_y_coms>>3)
Geremia 0:75ec1b3cde17 30 {
Geremia 0:75ec1b3cde17 31 if(displayproto==PAR_8) proto = new PAR8(port, CS, reset, DC, WR, RD);
Geremia 1:ff019d22b275 32 useNOP=false;
Geremia 7:bb0383b91104 33 buffer = (unsigned char*) malloc (screensize_X*_LCDPAGES);
Geremia 1:ff019d22b275 34 buffer16 = (unsigned short*)buffer;
Geremia 0:75ec1b3cde17 35 draw_mode = NORMAL;
Geremia 0:75ec1b3cde17 36 set_orientation(1);
Geremia 4:12ba0ecc2c1f 37 foreground(White);
Geremia 4:12ba0ecc2c1f 38 background(Black);
Geremia 2:713844a55c4e 39 set_auto_up(true);
Geremia 7:bb0383b91104 40 tftID=0;
Geremia 0:75ec1b3cde17 41 // cls();
Geremia 0:75ec1b3cde17 42 // locate(0,0);
Geremia 0:75ec1b3cde17 43 }
Geremia 1:ff019d22b275 44 LCD::LCD(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char *name)
Geremia 7:bb0383b91104 45 : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y), _LCDPAGES(lcdsize_y>>3), _IC_X_SEGS(ic_x_segs), _IC_Y_COMS(ic_y_coms), _IC_PAGES(ic_y_coms>>3)
Geremia 0:75ec1b3cde17 46 {
Geremia 1:ff019d22b275 47 if(displayproto==SPI_8)
Geremia 1:ff019d22b275 48 {
Geremia 1:ff019d22b275 49 proto = new SPI8(Hz, mosi, miso, sclk, CS, reset, DC);
Geremia 1:ff019d22b275 50 useNOP=false;
Geremia 1:ff019d22b275 51 }
Geremia 1:ff019d22b275 52 else if(displayproto==SPI_16)
Geremia 1:ff019d22b275 53 {
Geremia 1:ff019d22b275 54 proto = new SPI16(Hz, mosi, miso, sclk, CS, reset, DC);
Geremia 1:ff019d22b275 55 useNOP=true;
Geremia 1:ff019d22b275 56 }
Geremia 7:bb0383b91104 57 buffer = (unsigned char*) malloc (screensize_X*_LCDPAGES);
Geremia 1:ff019d22b275 58 buffer16 = (unsigned short*)buffer;
Geremia 0:75ec1b3cde17 59 draw_mode = NORMAL;
Geremia 0:75ec1b3cde17 60 // cls();
Geremia 0:75ec1b3cde17 61 set_orientation(1);
Geremia 4:12ba0ecc2c1f 62 foreground(White);
Geremia 4:12ba0ecc2c1f 63 background(Black);
Geremia 2:713844a55c4e 64 set_auto_up(true);
Geremia 7:bb0383b91104 65 tftID=0;
Geremia 0:75ec1b3cde17 66 // locate(0,0);
Geremia 1:ff019d22b275 67
Geremia 0:75ec1b3cde17 68 }
Geremia 0:75ec1b3cde17 69 LCD::~LCD()
Geremia 0:75ec1b3cde17 70 {
Geremia 0:75ec1b3cde17 71 free(buffer);
Geremia 0:75ec1b3cde17 72 }
Geremia 0:75ec1b3cde17 73
Geremia 1:ff019d22b275 74 void LCD::wr_cmd8(unsigned char cmd)
Geremia 0:75ec1b3cde17 75 {
Geremia 2:713844a55c4e 76 if(useNOP) proto->wr_cmd16(0xE300|cmd); // E3 is NOP cmd for LCD
Geremia 1:ff019d22b275 77 else proto->wr_cmd8(cmd);
Geremia 0:75ec1b3cde17 78 }
Geremia 1:ff019d22b275 79 void LCD::wr_data8(unsigned char data)
Geremia 0:75ec1b3cde17 80 {
Geremia 1:ff019d22b275 81 proto->wr_data8(data);
Geremia 1:ff019d22b275 82 }
Geremia 1:ff019d22b275 83 void LCD::wr_cmd16(unsigned short cmd)
Geremia 1:ff019d22b275 84 {
Geremia 1:ff019d22b275 85 proto->wr_cmd16(cmd);
Geremia 0:75ec1b3cde17 86 }
Geremia 4:12ba0ecc2c1f 87 void LCD::wr_gram(unsigned short data, unsigned int count)
Geremia 0:75ec1b3cde17 88 {
Geremia 4:12ba0ecc2c1f 89 proto->wr_gram(data, count);
Geremia 1:ff019d22b275 90 }
Geremia 4:12ba0ecc2c1f 91 void LCD::wr_grambuf(unsigned short* data, unsigned int lenght)
Geremia 1:ff019d22b275 92 {
Geremia 4:12ba0ecc2c1f 93 proto->wr_grambuf(data, lenght);
Geremia 0:75ec1b3cde17 94 }
Geremia 0:75ec1b3cde17 95 void LCD::hw_reset()
Geremia 0:75ec1b3cde17 96 {
Geremia 0:75ec1b3cde17 97 proto->hw_reset();
Geremia 0:75ec1b3cde17 98 }
Geremia 0:75ec1b3cde17 99 void LCD::BusEnable(bool enable)
Geremia 0:75ec1b3cde17 100 {
Geremia 0:75ec1b3cde17 101 proto->BusEnable(enable);
Geremia 0:75ec1b3cde17 102 }
Geremia 0:75ec1b3cde17 103
Geremia 0:75ec1b3cde17 104
Geremia 0:75ec1b3cde17 105
Geremia 0:75ec1b3cde17 106 // monochrome LCD driver ICs does not have ram rotate in hw (swap raw<->columns) like TFT displays
Geremia 0:75ec1b3cde17 107 // for portrait views, XY swap will be done in sw in pixel() function
Geremia 0:75ec1b3cde17 108 void LCD::set_orientation(int o)
Geremia 0:75ec1b3cde17 109 {
Geremia 0:75ec1b3cde17 110 orientation = o;
Geremia 0:75ec1b3cde17 111 switch (o) {
Geremia 0:75ec1b3cde17 112 case (0):// portrait view -90°
Geremia 0:75ec1b3cde17 113 mirrorXY(Y);
Geremia 0:75ec1b3cde17 114 col_offset = 0;
Geremia 7:bb0383b91104 115 page_offset = _IC_PAGES-_LCDPAGES;
Geremia 7:bb0383b91104 116 set_width(screensize_Y);
Geremia 7:bb0383b91104 117 set_height(screensize_X);
Geremia 0:75ec1b3cde17 118 // portrait = true;
Geremia 0:75ec1b3cde17 119 break;
Geremia 0:75ec1b3cde17 120 case (1): // default, landscape view 0°
Geremia 0:75ec1b3cde17 121 mirrorXY(NONE);
Geremia 0:75ec1b3cde17 122 col_offset = 0;
Geremia 0:75ec1b3cde17 123 page_offset = 0;
Geremia 7:bb0383b91104 124 set_width(screensize_X);
Geremia 7:bb0383b91104 125 set_height(screensize_Y);
Geremia 0:75ec1b3cde17 126 // portrait = false;
Geremia 0:75ec1b3cde17 127 break;
Geremia 0:75ec1b3cde17 128 case (2):// portrait view +90°
Geremia 0:75ec1b3cde17 129 mirrorXY(X);
Geremia 7:bb0383b91104 130 col_offset = _IC_X_SEGS-screensize_X; // some displays have less pixels than IC ram
Geremia 0:75ec1b3cde17 131 page_offset = 0;
Geremia 7:bb0383b91104 132 set_width(screensize_Y);
Geremia 7:bb0383b91104 133 set_height(screensize_X);
Geremia 0:75ec1b3cde17 134 // portrait = true;
Geremia 0:75ec1b3cde17 135 break;
Geremia 0:75ec1b3cde17 136 case (3):// landscape view +180°
Geremia 0:75ec1b3cde17 137 mirrorXY(XY);
Geremia 7:bb0383b91104 138 col_offset = _IC_X_SEGS-screensize_X;
Geremia 7:bb0383b91104 139 page_offset = _IC_PAGES-_LCDPAGES;
Geremia 7:bb0383b91104 140 set_width(screensize_X);
Geremia 7:bb0383b91104 141 set_height(screensize_Y);
Geremia 0:75ec1b3cde17 142 // portrait = false;
Geremia 0:75ec1b3cde17 143 break;
Geremia 0:75ec1b3cde17 144 }
Geremia 0:75ec1b3cde17 145 }
Geremia 0:75ec1b3cde17 146 void LCD::mirrorXY(mirror_t mode)
Geremia 0:75ec1b3cde17 147 {
Geremia 0:75ec1b3cde17 148 switch (mode)
Geremia 0:75ec1b3cde17 149 {
Geremia 0:75ec1b3cde17 150 case(NONE):
Geremia 1:ff019d22b275 151 // wr_cmd8(0xA0);
Geremia 1:ff019d22b275 152 wr_cmd16(0xA0C8); // this is in real Y mirror command, but seems most displays have COMs wired inverted, so assume this is the default no-y-mirror
Geremia 0:75ec1b3cde17 153 break;
Geremia 0:75ec1b3cde17 154 case(X):
Geremia 1:ff019d22b275 155 // wr_cmd8(0xA1);
Geremia 1:ff019d22b275 156 wr_cmd16(0xA1C8);
Geremia 0:75ec1b3cde17 157 break;
Geremia 0:75ec1b3cde17 158 case(Y):
Geremia 1:ff019d22b275 159 // wr_cmd8(0xA0);
Geremia 1:ff019d22b275 160 wr_cmd16(0xA0C0);
Geremia 0:75ec1b3cde17 161 break;
Geremia 0:75ec1b3cde17 162 case(XY):
Geremia 1:ff019d22b275 163 // wr_cmd8(0xA1);
Geremia 1:ff019d22b275 164 wr_cmd16(0xA1C0);
Geremia 0:75ec1b3cde17 165 break;
Geremia 0:75ec1b3cde17 166 }
Geremia 0:75ec1b3cde17 167 }
Geremia 0:75ec1b3cde17 168 void LCD::invert(unsigned char o)
Geremia 0:75ec1b3cde17 169 {
Geremia 1:ff019d22b275 170 if(o == 0) wr_cmd8(0xA6);
Geremia 1:ff019d22b275 171 else wr_cmd8(0xA7);
Geremia 0:75ec1b3cde17 172 }
Geremia 0:75ec1b3cde17 173
Geremia 0:75ec1b3cde17 174 void LCD::set_contrast(int o)
Geremia 0:75ec1b3cde17 175 {
Geremia 0:75ec1b3cde17 176 contrast = o;
Geremia 1:ff019d22b275 177 // wr_cmd8(0x81); // set volume
Geremia 1:ff019d22b275 178 wr_cmd16(0x8100|(o&0x3F));
Geremia 0:75ec1b3cde17 179 }
Geremia 2:713844a55c4e 180
Geremia 0:75ec1b3cde17 181 int LCD::get_contrast(void)
Geremia 0:75ec1b3cde17 182 {
Geremia 0:75ec1b3cde17 183 return(contrast);
Geremia 0:75ec1b3cde17 184 }
Geremia 0:75ec1b3cde17 185 void LCD::window(int x, int y, int w, int h) {
Geremia 0:75ec1b3cde17 186 // current pixel location
Geremia 0:75ec1b3cde17 187 cur_x = x;
Geremia 0:75ec1b3cde17 188 cur_y = y;
Geremia 0:75ec1b3cde17 189 // window settings
Geremia 0:75ec1b3cde17 190 win_x1 = x;
Geremia 0:75ec1b3cde17 191 win_x2 = x + w - 1;
Geremia 0:75ec1b3cde17 192 win_y1 = y;
Geremia 0:75ec1b3cde17 193 win_y2 = y + h - 1;
Geremia 0:75ec1b3cde17 194 }
Geremia 0:75ec1b3cde17 195 void LCD::window_pushpixel(unsigned short color) {
Geremia 0:75ec1b3cde17 196 pixel(cur_x, cur_y, color);
Geremia 0:75ec1b3cde17 197 cur_x++;
Geremia 0:75ec1b3cde17 198 if(cur_x > win_x2) {
Geremia 0:75ec1b3cde17 199 cur_x = win_x1;
Geremia 0:75ec1b3cde17 200 cur_y++;
Geremia 0:75ec1b3cde17 201 if(cur_y > win_y2) {
Geremia 0:75ec1b3cde17 202 cur_y = win_y1;
Geremia 0:75ec1b3cde17 203 }
Geremia 0:75ec1b3cde17 204 }
Geremia 0:75ec1b3cde17 205 }
Geremia 2:713844a55c4e 206 void LCD::window_pushpixel(unsigned short color, unsigned int count) {
Geremia 2:713844a55c4e 207 while(count)
Geremia 2:713844a55c4e 208 {
Geremia 2:713844a55c4e 209 pixel(cur_x, cur_y, color);
Geremia 2:713844a55c4e 210 cur_x++;
Geremia 2:713844a55c4e 211 if(cur_x > win_x2)
Geremia 2:713844a55c4e 212 {
Geremia 2:713844a55c4e 213 cur_x = win_x1;
Geremia 2:713844a55c4e 214 cur_y++;
Geremia 2:713844a55c4e 215 if(cur_y > win_y2)
Geremia 2:713844a55c4e 216 {
Geremia 2:713844a55c4e 217 cur_y = win_y1;
Geremia 2:713844a55c4e 218 }
Geremia 2:713844a55c4e 219 }
Geremia 2:713844a55c4e 220 count--;
Geremia 2:713844a55c4e 221 }
Geremia 2:713844a55c4e 222 }
Geremia 2:713844a55c4e 223 void LCD::window_pushpixelbuf(unsigned short* color, unsigned int lenght) {
Geremia 2:713844a55c4e 224 while(lenght)
Geremia 2:713844a55c4e 225 {
Geremia 2:713844a55c4e 226 pixel(cur_x, cur_y, *color++);
Geremia 2:713844a55c4e 227 cur_x++;
Geremia 2:713844a55c4e 228 if(cur_x > win_x2)
Geremia 2:713844a55c4e 229 {
Geremia 2:713844a55c4e 230 cur_x = win_x1;
Geremia 2:713844a55c4e 231 cur_y++;
Geremia 2:713844a55c4e 232 if(cur_y > win_y2)
Geremia 2:713844a55c4e 233 {
Geremia 2:713844a55c4e 234 cur_y = win_y1;
Geremia 2:713844a55c4e 235 }
Geremia 2:713844a55c4e 236 }
Geremia 2:713844a55c4e 237 lenght--;
Geremia 2:713844a55c4e 238 }
Geremia 2:713844a55c4e 239 }
Geremia 0:75ec1b3cde17 240 void LCD::pixel(int x, int y, unsigned short color)
Geremia 0:75ec1b3cde17 241 {
Geremia 0:75ec1b3cde17 242 if(!(orientation&1)) SWAP(x,y);
Geremia 0:75ec1b3cde17 243 // first check parameter
Geremia 7:bb0383b91104 244 if((x >= screensize_X) || (y >= screensize_Y)) return;
Geremia 0:75ec1b3cde17 245
Geremia 0:75ec1b3cde17 246 // if(draw_mode == NORMAL)
Geremia 0:75ec1b3cde17 247 // {
Geremia 7:bb0383b91104 248 if(color) buffer[(x + ((y>>3)*screensize_X))^1] &= ~(1 << (y&7)); // erase pixel
Geremia 7:bb0383b91104 249 else buffer[(x + ((y>>3)*screensize_X))^1] |= (1 << (y&7)); //Black=0000, set pixel
Geremia 0:75ec1b3cde17 250 // }
Geremia 0:75ec1b3cde17 251 // else
Geremia 0:75ec1b3cde17 252 // { // XOR mode
Geremia 7:bb0383b91104 253 // if(color == 1) buffer[x + ((y>>3) * screensize_X)] ^= (1 << (y&7)); // xor pixel
Geremia 0:75ec1b3cde17 254 // }
Geremia 0:75ec1b3cde17 255 }
Geremia 0:75ec1b3cde17 256 void LCD::copy_to_lcd(void)
Geremia 0:75ec1b3cde17 257 {
Geremia 0:75ec1b3cde17 258 unsigned short i=0;
Geremia 1:ff019d22b275 259 unsigned short setcolcmd = 0x0010 | ((col_offset&0xF)<<8) | (col_offset>>4);
Geremia 7:bb0383b91104 260 for(int page=0; page<_LCDPAGES; page++)
Geremia 0:75ec1b3cde17 261 {
Geremia 1:ff019d22b275 262 // wr_cmd8(col_offset&0xF); // set column low nibble
Geremia 1:ff019d22b275 263 // wr_cmd8(0x10|(col_offset>>4)); // set column hi nibble
Geremia 1:ff019d22b275 264 wr_cmd16(setcolcmd);
Geremia 1:ff019d22b275 265 wr_cmd8(0xB0|(page+page_offset)); // set page
Geremia 7:bb0383b91104 266 wr_grambuf(buffer16+i, screensize_X>>1); // send whole page pixels
Geremia 7:bb0383b91104 267 i+=screensize_X>>1;
Geremia 0:75ec1b3cde17 268 }
Geremia 0:75ec1b3cde17 269 }
Geremia 0:75ec1b3cde17 270 void LCD::cls(void)
Geremia 0:75ec1b3cde17 271 {
Geremia 4:12ba0ecc2c1f 272 unsigned short tmp = _background^0xFFFF;
Geremia 7:bb0383b91104 273 memset(buffer,tmp,screensize_X*_LCDPAGES); // clear display buffer
Geremia 1:ff019d22b275 274 unsigned short setcolcmd = 0x0010 | ((col_offset&0xF)<<8) | (col_offset>>4);
Geremia 7:bb0383b91104 275 for(int page=0; page<_LCDPAGES; page++)
Geremia 0:75ec1b3cde17 276 {
Geremia 1:ff019d22b275 277 // wr_cmd8((unsigned char)col_offset&0xF); // set column low nibble
Geremia 1:ff019d22b275 278 // wr_cmd8(0x10|(col_offset>>4)); // set column hi nibble
Geremia 1:ff019d22b275 279 wr_cmd16(setcolcmd);
Geremia 1:ff019d22b275 280 wr_cmd8(0xB0|(page+page_offset)); // set page
Geremia 7:bb0383b91104 281 wr_gram(tmp, screensize_X>>1); // send whole page pixels =0
Geremia 0:75ec1b3cde17 282 }
Geremia 7:bb0383b91104 283 }
Geremia 7:bb0383b91104 284 int LCD::sizeX()
Geremia 7:bb0383b91104 285 {
Geremia 7:bb0383b91104 286 return screensize_X;
Geremia 7:bb0383b91104 287 }
Geremia 7:bb0383b91104 288 int LCD::sizeY()
Geremia 7:bb0383b91104 289 {
Geremia 7:bb0383b91104 290 return screensize_Y;
Geremia 0:75ec1b3cde17 291 }